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Question 1: The weights of watermelons sold at Danube are normally distributed with a standard deviation of 2.8 lb. Find the mean weight of Danube’s watermelons if only 3 % weigh less than 15 lb.
Question: 2 for a particular age group of adult males, the distribution of cholesterol readings, in mg/dl, is normally distributed with a mean of 210 and a standard deviation of 15. What percentage of this population would have readings exceeding 250?
data from previous years reveal that the distribution of the final exam scores in an introductory statistics class is
for the data in the following sample8 1 5 1 5a. find the mean and the standard deviation.b. now change the score of x 8
1. you are tracking correlation of two funds fund a and fund b. examining current quarter data to date the probability
a sample of 4 telephones is selected from a shipment of 20 phones. there are 5 defective telephones in the shipment.
two distinct solid fuel propellants type a and type b are being considered for a space program activity. burning rates
You need to estimate the mean number of travel days per year for outside salespeople. The mean of a small pilot study was 150 days, with a standard deviation of 42 days.
The batteries in his calculator. What is the probability that all four batteries work? What are the mean and variance for the number of batteries that work?
Make a worksheet in Excel for your calculations. (b) Make a histogram of the data. Would you be justified in using a parametric t test that assumes normality? Explain.
Use 0.01 significance level to test the claim that the selection process is biased against Mexican-Americans. What is the mean and standard deviation for the numbers of Mexican Americans?
in an august 2012 gallup survery of 1012 randomly selected u.s. adults 53 said that they were dissatisfied with the
the chart below shows the numbers of endangered and threatened species both here in the united states and
the following problem should be answered in rgenerate 50 normal distributions with mean 15 and standard deviation 3
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